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Environmental Science
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Environmental Science
Quiz 11: Water Resources and Water Pollution
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Question 81
Short Answer
The LifeStraw is a portable ____________________ that eliminates many bacteria and viruses,making water safer to drink.
Question 82
Essay
Discuss the major issues associated with freshwater resources in the United States.
Question 83
Essay
Briefly explain how ecological sewage treatment systems work and how they are advantageous over conventional sewage treatment systems.
Question 84
Short Answer
The desalination process called ____________________ (or microfiltration)uses high pressure to force saltwater through a filter that removes the salt and other impurities.
Question 85
Essay
Explain what causes an oxygen sag curve and how this can impact natural populations in that ecosystem.
Question 86
Short Answer
The cold temperatures of ____________________ slow down chemical reactions that decompose wastes.
Question 87
Essay
Explain how soil erosion,associated with poor agricultural practices,can lead to a decrease in dissolved oxygen in bodies of water.
Question 88
Essay
List at least five things you are willing to do to help eliminate water waste.As part of your answer explain why these things are important.
Question 89
Short Answer
When chemical pollutants reach a(n)____________________,successful cleanup is often not possible or is too expensive.
Question 90
Essay
What are the three major reasons why the Colorado River system will be directly affected by current drought conditions?
Question 91
Essay
How will climate change contribute to water pollution?
Question 92
Short Answer
When South Africa raised water prices,low-income consumers were helped be establishing ____________________,which give each household a set amount of free or low-priced water to meet basic needs.
Question 93
Short Answer
In the spring and summer of each year a(n)____________________ occurs off the U.S.coast in the Gulf of Mexico mostly because of nitrates and crop fertilizers.
Question 94
Essay
Why might the location of the city of Las Vegas in the southwest desert be considered unsustainable? Consider using information about water scarcity and stress found in Chapter 11 Water Resources and Water Pollution.